Patrick J. Buchanan notes that “That memo worked up in the Intel Committee of Chairman Devin Nunes may not have sunk the Mueller investigation, but from the sound of the secondary explosions, this torpedo was no dud.”

The critical charge:

To persuade a FISA court to issue a warrant to spy on Trump aide Carter Page, the FBI relied on a dossier produced by a Trump-hating British spy, who was using old Kremlin contacts, while being paid to dig up dirt on Donald Trump by Hillary Clinton’s campaign.

Not only were the Clinton campaign and DNC paying the spy, Christopher Steele, for his dirt-diving, the FBI put Steele on its own payroll, until they caught him lying about leaking to the media.

In their requests for search warrants, the FBI never told the FISA court judge their primary source was a 35-page dossier delivered by Steele that their own Director James Comey described as “salacious and unverified.”

From the Nunes memo, there was, at the highest level of the FBI, a cabal determined to derail Trump and elect Clinton. Heading the cabal was Comey, who made the call to exonerate Hillary of criminal charges for imperiling national security secrets, even before his own FBI investigation was concluded.

Assisting Comey was Deputy Director Andrew McCabe, whose wife, running for a Virginia state senate seat, received a windfall of $467,000 in contributions from Clinton bundler Terry McAuliffe.

Last week, McCabe was discharged from the FBI. Seems that in late September 2016, he learned from his New York field office that it was sitting on a trove of emails between Anthony Weiner and his wife, Clinton aide Huma Abedin, which potentially contained security secrets.

Not until late October did Comey inform Congress of what deputy McCabe had known a month earlier.

Other FBI plotters were Peter Strzok, chief investigator in both the Clinton email server scandal and Russiagate, and his FBI girlfriend, Lisa Page. Both were ousted from the Mueller investigation when their anti-Trump bias and behavior were exposed last summer.

Filling out the starting five was Bruce Ohr, associate deputy attorney general under Loretta Lynch. In 2016, Ohr’s wife was working for Fusion GPS, the oppo research arm of the Clinton campaign, and Bruce was in direct contact with Steele.

Now virtually all of this went down before Robert Mueller was named special counsel. But the poisoned roots of the Russiagate investigation and the bristling hostility of the investigators to Trump must cast a cloud of suspicion over whatever charges Mueller will bring.

Now another head may be about to fall, that of Deputy Attorney General Rod Rosenstein.

If Mueller has given up trying to prove Trump collusion with the Kremlin and moved on to obstruction of justice charges, Rosenstein moves into the crosshairs.

For the heart of any obstruction scenario is Trump’s firing of James Comey and his boasting about why he did it.

Consider where we are. Mueller is investigating alleged Trump collusion with Russia, and the White House is all lawyered up.

The House intel committee is investigating Clinton-FBI collusion to defeat Trump and break his presidency. FBI Inspector General Michael Horowitz is looking into whether the fix was in to give Hillary a pass in the probe of her email server.

Comey has been fired, his deputy McCabe removed, his chief investigator Strzok ousted by Mueller for bigoted anti-Trump behavior, alongside his FBI paramour, Page. Bruce Ohr has been demoted for colluding with Steele, who was caught lying to the FBI and fired, and for his wife’s role in Fusion GPS, which was being paid to dig up dirt on Trump for Clinton’s campaign.

If Americans are losing confidence in the FBI, whose fault is that? Is there not evidence that a hubristic cadre at the apex of the FBI — Comey, McCabe, Strzok foremost among them — decided the Republic must be saved from Trump and, should Hillary fail, they would step in and move to abort the Trump presidency at birth?

To the deep state, the higher interests of the American people almost always coincide with their own.